transformer polarity/connections

Question 1

The industry standard for the location of an H1 terminal when facing the ? is the left hand side.

Answer 1

low voltage side

Question 2

According to this lesson, the U.S. standard for the polarity of single-phase transformers is ? for transformers below 200 kVA with high voltage ratings of 8,600 volts and below.

Answer 2

additive

Question 3

Polarity is determined by the direction the high-voltage coil is wound in relation to the low-voltage coil winding direction.

Answer 3

true

Question 4

Distribution transformers are generally manufactured with ? polarity.

Answer 4

additive

Question 5

Large power transformers are generally manufactured with ? polarity.

Answer 5

subtractive

Question 6

Current flows into a single-phase transformer in the H1 terminal and out the X1 terminal at the same instant.

Answer 6

true

Question 7

The H2 terminal on a single bushing transformer is solidly connected to the ? of the tank.

Answer 7

inside

Question 8

The direction the primary and secondary are wound on the core has nothing to do with polarity.

Answer 8

false

Question 9

The polarity of a distribution transformer can be changed by exchanging the internal leads on the secondary between X1 and X3.

Answer 9

true

Question 10

In order to phase in a single-phase transformer, the transformer ?

Answer 10

neutral must be connected

Question 11

A polarity test should be performed on a transformer with a missing or damaged nameplate and the polarity marked on the transformer ?

Answer 11

case